1155718144 has 44 divisors (see below), whose sum is σ = 2640367984. Its totient is φ = 495304704.

The previous prime is 1155718129. The next prime is 1155718153. The reversal of 1155718144 is 4418175511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73449 + ... + 87784.

Almost surely, 2^1155718144 is an apocalyptic number.

1155718144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1155718144 is an abundant number, since it is smaller than the sum of its proper divisors (1484649840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155718144 is an equidigital number, since it uses as much as digits as its factorization.

1155718144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161260 (or 161242 counting only the distinct ones).

The product of its digits is 22400, while the sum is 37.

The square root of 1155718144 is about 33995.8548061378. The cubic root of 1155718144 is about 1049.4231582890.

The spelling of 1155718144 in words is "one billion, one hundred fifty-five million, seven hundred eighteen thousand, one hundred forty-four".